1. T-Mobile US Q4 and Full Year 2013

2. Disclaimer
This presentation contains “forward-looking” statements within the meaning of the U.S. federal securities laws. For
those statements, we claim the protection of the safe harbor for forward-looking statements contained in the
Private Securities Litigation Reform Act of 1995. Any statements made herein that are not statements of historical
fact, including statements about T-Mobile US, Inc.'s plans, outlook, beliefs, opinions, projections, guidance,
strategy, integration of MetroPCS, expected network modernization and other advancements, are forward-looking
statements. Generally, forward-looking statements may be identified by words such as "anticipate," "expect,"
"suggests," "plan," “project,” "believe," "intend," "estimates," "targets," "views," "may," "will," "forecast," and other
similar expressions. The forward-looking statements speak only as of the date made, are based on current
assumptions and expectations, and involve a number of risks and uncertainties. Important factors that could affect
future results and cause those results to differ materially from those expressed in the forward-looking statements
include, among others, the following: our ability to compete in the highly competitive U.S. wireless
telecommunications industry; adverse conditions in the U.S. and international economies and markets; significant
capital commitments and the capital expenditures required to effect our business plan; our ability to adapt to future
changes in technology, enhance existing offerings, and introduce new offerings to address customers' changing
demands; changes in legal and regulatory requirements, including any change or increase in restrictions on our
ability to operate our network; our ability to successfully maintain and improve our network, and the possibility of
incurring additional costs in doing so; major equipment failures; severe weather conditions or other force majeure
events; and other risks described in our filings with the Securities and Exchange Commission, including those
described in our Annual Report on Form 10-K filed with the Securities and Exchange Commission on February 25,
2014. You should not place undue reliance on these forward-looking statements. We do not undertake to update
forward-looking statements, whether as a result of new information, future events or otherwise, except as required
by law.
As required by SEC rules, we have provided a reconciliation of the non-GAAP financial measures included in this
presentation to the most directly comparable GAAP measures in materials on our website at http://investor.tmobile.com.
2

3. Agenda
Operating Highlights and
Key Initiatives
Financial Results
Q&A
3
John Legere, President and CEO
Braxton Carter, CFO
TMUS Management Team

4. Operating Highlights and Key Initiatives
John Legere
President and CEO
4

5. Key Messages
1
2013: T-Mobile is the fastest growing wireless company


2
Total net additions of more than 4.4 million in 2013 – 1.6 million in Q4
Branded postpaid net additions of over 2 million in 2013 – 869K in Q4
Growth and profitability

Met Adjusted EBITDA target while exceeding branded postpaid net adds guidance

Strong cost discipline with $1.7 billion run-rate costs taken out of the business in 2013
Strong operating improvement – improved retention & customer quality
3

Branded postpaid churn of 1.7% for FY 2013 – down 70bps YoY

Improving quality metrics: service bad debt expense, % Prime in EIP receivables
Continuing growth path even further in 2014 – already seen in Q1
4


5
Guiding toward Adjusted EBITDA of $5.7 to $6.0 billion
Branded postpaid net adds guidance of 2 to 3 million
Note: All figures for 4Q12, 1Q13 and 2Q13 are pro forma combined results.

6. Transformational Year of Growth as Un-carrier
Path to
Growth
FASTEST NATIONWIDE 4G LTE NETWORK
UN-CARRIER 4.0 – CONTRACT FREEDOM
JAN 8
ANNOUNCED VERIZON A-BLOCK TRANSACTION
JAN 6
UN-CARRIER 3.0, PART II – TABLETS UN-LEASHED
UN-CARRIER 3.0, PART I – SIMPLE GLOBAL
UN-CARRIER 2.0 – JUMP! AND SIMPLE CHOICE FOR FAMILY
CLOSED METROPCS DEAL – TMUS LISTED ON NYSE
APPLE iPHONE LAUNCHED
UN-CARRIER 1.0 – SIMPLE CHOICE
6
JAN 8
OCT 23
OCT 9
JULY 10
APRIL 30 / MAY 1
APRIL12
MARCH 26

7. Sustained Postpaid Growth – Improving Quality
QoQ
change
Branded Postpaid Nets
in thousands
688
648
869
869K Branded Postpaid Net Adds
 800K branded postpaid phone net adds
 +80% YoY and +15% QoQ gross adds
221K
(199)
 1.7% postpaid churn, down 80 bps YoY
(515)
4Q12
 2.006 million FY13 branded postpaid net adds
1Q13
2Q13
3Q13
4Q13
Branded Postpaid Churn
Continued Improvement in Customer Quality
in %
 2013 Service bad debt exp. down 51% YoY
2.5%
1.9%
1.6%
1.7%
 EIP receivables: 54% Prime vs. 43% in 4Q12
1.7%
0 bps
4Q12
1Q13
2Q13
3Q13
4Q13
Branded Prepaid Nets
Branded Prepaid Net Adds Accelerating
in thousands
 112K branded prepaid net adds in 4Q13
310
 Ongoing prepaid to postpaid migrations of
~120K
112
73
24
88K
(87)
4Q12
7
1Q13
 Un-carrier 4.0 launch – strong uptake among
highest credit quality customers
2Q13
3Q13
4Q13
 +5% QoQ gross adds due primarily to
MetroPCS brand expansion
Note: All figures for 4Q12, 1Q13 and 2Q13 are pro forma combined results.

8. Strong Customer Momentum Across the Board
QoQ
change
Total Branded Nets
in thousands
601
672
981
Nearly 1.0 Million Total Branded Net Adds
111
309K
 Un-carrier strategy driving continued success
in branded postpaid and prepaid
(442)
4Q12
1Q13
2Q13
3Q13
4Q13
Wholesale Nets
Strong Performance in Wholesale
in thousands
576
410
 492K MVNO net adds, up 79% YoY and 43%
QoQ
664
452
351
313K
4Q12
1Q13
2Q13
3Q13
Total Nets
4Q13
 172K M2M net adds, up 27% YoY and up
significantly from 7K in 3Q13
1,645
in thousands
1,053
1,023
Over 4.4 million Total Net Adds in 2013
687
622K
 3rd consecutive quarter of over 1 million net
adds
(32)
4Q12
8
1Q13
2Q13
3Q13
4Q13
Note: All figures for 4Q12, 1Q13 and 2Q13 are pro forma combined results.

9. Fastest 4G LTE Network in the United States
4G LTE Covered POPs (M)
Rapid Expansion of 4G LTE
 209M 4G LTE POPs in 273 metro areas
250+
209
 Live 4G LTE in 95 of Top 100 metro areas
 250M+ POPs targeted in 2014
Fastest 4G LTE Network in the US1
0
 10+10MHz 4G LTE in 43 of Top 50 metro areas
2012
2013
2014
700MHz A-Block License Areas
 Live 20+20MHz 4G LTE in Dallas
 Continued planned rollout of 20+20MHz 4G
LTE in 2014
Strategic 700 A-Block Transaction Announced
 158M POPs covered including existing Boston
license
 9 of Top 10 and 21 of Top 30 metro areas
 70% of existing TMUS customer base
 Deployment planned to start in 2014 after
closing
1 According to our independent analysis of the NetMetrics reports
provided by Speedtest.net.
9

10. MetroPCS Integration Continues Ahead of Plan
Spectrum & Market Expansion
 >25% of MetroPCS spectrum refarmed and integrated into the
T-Mobile network at end of 2013
 MetroPCS customers with TMUS
compatible handsets: 3.5M (Feb
2014)
 30 new expansion markets with over
1,700 distribution points at end of
4Q13
Synergies & One-Time Costs
 Synergies exceeded plan in 20131
– Capex synergies at $675M versus
original plan of $70-135M
– Opex synergies at $105M versus
original plan of $(30)-30M
 One-time integration costs – opex
and capex – ahead of target in 20131
‒ $450M network and non-network
costs versus original plan of $500640M
 Accelerating shutdown of 3 markets
from 2015 to 2014 with potential for
early shutdown in several additional
markets
1 Original Year 1 targets multiplied by 2/3.
10

11. Financial Results
Braxton Carter
CFO
11

12. Strong Profitability and Significant Growth
QoQ %
change
Total Revenues
in millions
$6,193
$5,964
$6,651
$6,688
$6,827
 YoY and QoQ growth in Total Revenue
2.1%
4Q12
1Q13
2Q13
3Q13
$5,106
$5,122
Continued Growth in Service Revenues
$5,138
 Third consecutive quarter of sequential growth
in Service Revenue
$5,169
0.6%
4Q12
1Q13
2Q13
 $1.2 billion of equipment sales revenue
financed on EIP vs. $1.0 billion in 3Q13 and
$375 million in 4Q12
4Q13
Service Revenues
in millions
$5,227
Total Revenue Growth of 10% YoY
3Q13
 Significant customer growth offsetting
migrations to Simple Choice / Value Plans
4Q13
Over $5.3 billion of Adjusted EBITDA in 2013
 FY13 Adjusted EBITDA fully in line with
guidance coupled with significant out
performance on growth
Adjusted EBITDA
in millions
$1,355
$1,469
$1,265
$1,344
$1,239
 Record smartphone sales of 6.2 million units
7.8%
4Q12
12
1Q13
2Q13
3Q13
4Q13
 Branded postpaid upgrade rate of 9%; up from
6% in 4Q12 and flat sequentially
Note: All figures for 4Q12, 1Q13 and 2Q13 are pro forma combined results.

13. Rapid Adoption of Simple Choice Driving ARPU
QoQ %
change
Branded Postpaid ARPU
$ per month
$55.47
$54.07
$53.60
$52.20
$50.70
2.9%
4Q12
1Q13
2Q13
3Q13
4Q13
Branded Postpaid Average Billings Per User1
$ per month
$57.97
ARPU Decline Related to Ongoing Adoption
of Simple Choice Plans
 Simple Choice / Value Plans accounted for
69% of branded postpaid base vs. 61% in
3Q13 and 30% in 4Q12
Branded Postpaid Average Billings Per User
up 1.4% YoY in 4Q
 Acceleration from 3Q growth of 0.9% YoY
$57.28
$58.72
$59.08
$58.78
EIP
0.5%
Service
Customer Quality Continues to Improve
 2013 Service bad debt exp. down 51% YoY
4Q12
1Q13
2Q13
3Q13
 2013 Service bad debt exp. as % of service
revenues: 1.47%; down 136 basis points YoY
4Q13
Branded Prepaid ARPU
$ per month
$35.71
Branded Prepaid ARPU Up YoY and QoQ
$35.87
$35.97
$35.71
$35.84
 Reflects growth in monthly prepaid service
plans that include data services
0.4%
10%
4Q12
13
1Q13
2Q13
3Q13
4Q13
Note: All figures for 4Q12, 1Q13 and 2Q13 are pro forma combined results.
1 Branded Postpaid Average Billings Per User is calculated by adding EIP
Billings to Branded Postpaid Service Revenues and dividing by Average
Branded Postpaid Customers.

14. Balance Sheet Provides Significant Flexibility
Cash Capex
Ongoing Investment in Network Modernization
in millions
$1,156
$1,230
$1,111
$1,017
$882
 Capex weighted toward H1 to maximize
customer benefits
 Fastest 4G LTE network covering 209M POPs in
273 metro areas
4Q12
1Q13
2Q13
3Q13
4Q13
Simple Free Cash Flow1
Focused on Free Cash Flow (FCF) Generation
in millions
$199
4Q12
 FY13 Simple FCF of $1.077 billion
$239
1Q13
$327
$357
$154
2Q13
3Q13
4Q13
Strong Liquidity
Ending Cash
 $5.891 billion ending cash position
in millions
$5,891
$2,362
$394
4Q12
14
 Total EIP receivables, net of deferred interest and
allowances for credit losses, up $0.6 billion from
3Q13 and up $1.8 billion from 4Q12
 $14.3 billion net debt excluding towers
 2.7x pro forma combined 2013 Adjusted EBITDA
$2,365
$449
1Q13
2Q13
3Q13
4Q13
Note: All figures, except ending cash for Q4 2012 and Q1 & Q2 2013, are pro
forma combined results. Ending cash amounts are TMUS reported results,
not pro forma combined. 1 Simple FCF is Adjusted EBITDA less cash capex.

15. Successful Execution on 2013 Guidance
2013 Guidance Achievement
Guidance
Actual
Adjusted EBITDA pro forma
combined (in billions)1
$5.2 – $5.4
$5.3
Cash Capex pro forma
combined (in billions)1
$4.2 – $4.4
$4.2
1.6 – 1.8
2.0
65% – 75%
69%
Branded Postpaid Net Adds
(millions)
Penetration of Simple
Choice/Value Plans in
Branded Postpaid Base
1 Pro forma combined includes MetroPCS results for the full year.
15

16. Guidance for 2014
2014 Guidance Outlook
Adjusted EBITDA
(in billions)
$5.7 – $6.0
Cash Capex
(in billions)
$4.3 – $4.6
Branded Postpaid Net
Adds (in millions)
Penetration of Simple
Choice/Value Plans in
Branded Postpaid Base
16
2.0 – 3.0
85% – 90%

17. Key Messages
1
2013: T-Mobile is the fastest growing wireless company


2
Total net additions of more than 4.4 million in 2013 – 1.6 million in Q4
Branded postpaid net additions of over 2 million in 2013 – 869K in Q4
Growth and profitability


3
Met Adjusted EBITDA target while exceeding branded postpaid net adds guidance
Strong cost discipline with $1.7 billion run-rate costs taken out of the business in 2013
Strong operating improvement – improved retention & customer quality


4
Branded postpaid churn of 1.7% for FY 2013 – down 70bps YoY
Improving quality metrics: service bad debt expense, % Prime in EIP receivables
Continuing growth path even further in 2014 – already seen in Q1

Guiding toward Adjusted EBITDA of $5.7 to $6.0 billion

Branded postpaid net adds guidance of 2 to 3 million
17
Note: All figures for 4Q12, 1Q13 and 2Q13 are pro forma combined results.

18. T-Mobile US Q4 and Full Year 2013